Examine source code of ChatGPT keyboard controls

{
  "manifest_version": 2,
  "name": "ChatGPT keyboard controls",
  "version": "1.0.2",
  "description": "Controls ChatGPT with the keyboard. Ctrl + arrow scroll up/down 500px, Ctrl + Alt + arrow scroll up/down 100px, Alt + arrow questions asked will replace the current input, Moving down beyond the last question should refill input with the original input.",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://chat.openai.com/*"
      ],
      "js": [
        "js/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgpt.keyboard.control@ocodo.info",
      "strict_min_version": "57.0"
    }
  }
}